.nav-menu {
    width: 200px;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    font-size: 14px;
    padding-top: 10px;
    box-sizing: border-box;
}
.nav-menu::-webkit-scrollbar {
    height: 4px;
    width: 4px;
}
.nav-menu::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.26);
}